Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47e7e16b2f35933…

MALICIOUS

PDF

20.7 KB Created: 2020-10-08 00:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8553d45131c7692b48050f7514333d38 SHA-1: 523b7bb14327b1a0e0bbbb3005dcb1a1116c96bf SHA-256: d47e7e16b2f35933ef497bd3225c5a9ed1b2e86f51cb7dd7e7beba2993c324e0
222 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to disposable domains, indicating a link farm or SEO manipulation scheme. One critical heuristic identified a link to known malicious redirector infrastructure at https://cctraff.ru/strik?keyword=alimentacion+consciente+pdf. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the overall structure suggests a lure to distribute further malicious content or engage in SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=alimentacion+consciente+pdf In PDF document text
    • http://files.wildconnectionart.com/uploads/1/3/1/4/131483371/626cae7.pdfIn PDF document text
    • http://files.jaztalks.com/uploads/1/3/0/7/130739024/073e0.pdfIn PDF document text
    • http://files.cakeduk.com/uploads/1/3/1/3/131380343/xiwux_dafadik_zapesuxife.pdfIn PDF document text
    • http://wegoxuro.marinerdrama.com/uploads/1/3/0/7/130776492/7346767.pdfIn PDF document text
    • http://files.thechurchtaxexpertsofamericallc.com/uploads/1/3/1/4/131453527/pisokov.pdfIn PDF document text
    • https://site-1036993.mozfiles.com/files/1036993/94684262916.pdfIn PDF document text
    • https://site-1036743.mozfiles.com/files/1036743/76064307909.pdfIn PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/jetegabuv.pdfIn PDF document text
    • https://site-1036742.mozfiles.com/files/1036742/pobele.pdfIn PDF document text
    • https://site-1036923.mozfiles.com/files/1036923/pudusasunanigodigosoziga.pdfIn PDF document text
    • http://gipew.youthultimateprogram.org/uploads/1/3/0/7/130775583/wowarefevadufet.pdfIn PDF document text
    • http://ronux.westlandvocalmusic.com/uploads/1/3/1/3/131382271/biwake_vibez_wofosagijugun_bixezudujalofu.pdfIn PDF document text
    • http://rozawu.oxfordleamingtonclinic.com/uploads/1/3/0/7/130738799/kigivi.pdfIn PDF document text
    • http://nodoloti.applecreekcottages.com/uploads/1/3/1/3/131380908/nigowugitegi_jomew_xajetefuwapofo_sikewikapos.pdfIn PDF document text
    • http://bumojiril.sietinternational.org/uploads/1/3/0/7/130739456/xodexifez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbfdf5d7-7da5-40d8-86d7-452b4aa49515/basanidakizebikidivitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e158b1-3595-4654-8c13-2edcc68952d5/29945754298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cdce8ba-20d7-41b6-95fc-032364669388/laxupovasapum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec05904-97d0-4e94-9d53-ef0bd6dac3de/38832690533.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fd4017d-7e81-4afa-8a10-60f3ebdb69ef/legudilamenu.pdfIn PDF document text

Related samples 8

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